San Francisco, Calif. : Architect and Engineer Co · leaf 390
er of on.itud.na rocR Th si oif preferred mav be made ot concrete similar to that in 1 ig. . m tnrcase the ^cti IS are assembled at the site of the work as nee.le.l: they arem,po e<l wl e bein- sunk in place, by rods, and when p ace, the.erT are en bedded in^ the concrete filling an.l torm an… … _^t^-Li
Architecture · Building
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-129-43.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-343-139.webp)
